[Uploading mesh Vertex error]

Hey guys I made this mesh full of diamonds and I can’t get it uploaded due to the mesh error, even if I made the physics to cube, I’ve seen a lot of meshers creating this and uploading them without cutting any parts

if anyone know how I can upload them in one piece please let me know. Thanks 

[Designer Looking For A Job]

I’m a Graphics designer ( includes graphics design, 3d designs, meshes like  chains, video editing for YouTube or anything, pro at texturing clothes etc..) if you want to know more please contact me if you want with the email below. 

Insta-  imvu.versace